onKeyDown() issue

android android-view onkeydown
Niko Gamulin picture Niko Gamulin · Jun 10, 2009 · Viewed 53.1k times · Source

I would like to create a photo/video capture application.

I have created a CaptureView class which extends SurfaceView and placed it in the main form.

The main form's activity has onCreateOptionsMenu() method which creates a menu. The menu worked fine but then I tried to implement a method onKeyDown:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {

    if(event.getAction() == KeyEvent.ACTION_DOWN) {
        switch(keyCode) {
        case KeyEvent.KEYCODE_CAMERA:
            videoPreview.TakePicture();
            return true;
        }
    }

    return super.onKeyDown(keyCode, event);
}

The menu doesn't appear anymore and the method doesn't catch onKeyDown event.

Does anyone know what could be the reason for this issue?

Answer

Ciryon picture Ciryon · Nov 30, 2009

I had a similar problem and solved it by adding 

this.requestFocus();
this.setFocusableInTouchMode(true);

in the constructor of my SurfaceView subclass.

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